The robot_retro GBA overclocker flex mod provides a simple way of overclocking or underclocking your Gameboy advance. They have simplified the installation by eliminating the manual wiring process (with the exception of a single optional LED indicator wire). Flex Key Features Capable of over and underclocking to 30%, 50%, 75%, 130%, 150% or 170% of base clock. Increase speed = Press Start and Up Decease speed = Press Start and Right Easy flex installation with optional wire link to LED DL2A. Power LED will blink faster when overclocked and slower when underclocked. Base speed is a solid green LED. Top speed can be set to 170%, 150% or 130% Default max speed: 170% (compatible with stock LCD, Funnyplaying v2, Hispeedido Laminated v5) Bridge solder jumper S1 to limit max speed to 150% (for Hispeedido v2 non-laminated) Bridge solder jumper S2 to limit max speed to 130% (for Funnyplaying 3.0 inch laminated) Other Features Very low power consumption. Measured as 0.01% accurate. There is will no difference between this mod and the original GBA crystal at stock speeds. Installation Remove the GBA crystal. Recommended to use a hot air station for this step. Install the flex as per photos. Solder the points shown within the pink circles (total of 6 solder points). It is recommended to use flux for this step. OPTIONAL: Run and wire between the flex and test point DL2A (both shown inside the yellow circles). This will make the power LED blink faster/slower when over or underclocking. Speed Limiting Bridge solder jumper S1 to limit the speed to 150%. Bridge solder jumper S2 to limit the speed to 130%. Developed in collaboration with RJS FPGA